What are the four stages of trauma that hearing parents experience when they receive a diagnosis of their children's hearing loss?

The four stages of trauma that hearing parents experience when they receive a diagnosis that their children is exhibiting a hearing loss are the following stages of trauma such as;

-        Grief

-        Mourning

-        Denial

-        Anger

These are emotions that the parents may feel and undergo through due to certain circumstances such as the example above.

on december 1, 1774, the continental association was created to boycott all contact with british goods. by reversing the economic sanctions placed on the colonists, the delegates hoped britain would repeal its intolerable acts.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.